Centrifugal bowl for use on centrifugal separators



N. H. NORRIS. CENTRIFUGAL BOWL FOR USE ON CENTRIFUG AL SEPARATORS.

APPLICATION FILED APR. 19. 1920. 1,371,259.

2 SHEETS-SHEET I.

Patented Mar. 15', 1921.

N. H. NORRIS. CENTRIFUGAL BOWL FOR USE ON CENTRIFUGAL SEEARATORS.

APPLICATION FILED APELJQ, 1.920.

Patented Mar. 15, 1921.

2 SHEET$SHEET 2- fill/Mair 1mm m/vaws I 3/ Y In 1 UNITED STATES PATENT OFFICE.

NELSQN HOWARD NORRIS, OF BEN'FREW', ONTARIO,

CANADA.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed April 19, 1920. Serial No. 375,000.

T 0 all whom it may concern:

Be it known that I, NELSON HOWARD NOR- RIS, a subject of the King of Great Britain, a resident of the town of Renfrew, Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Centrifugal Bowls for Use on Centrifugal Separators, of which the following is a specification.

his invention relates to improvements in centrifugal bowls for use on centrifugal separators, and the objects of the invention are to so control the flow of the liquid being separated and direct its travel in such a manner that it will be required to travel the greatest possible distance while subjected to the separating process and to keep the liquid constantly under a maximum of pressure and the travel and time under complete regulation, to eliminate all loose parts which would have a tendency to afiect the balance of the bowl, and to provide a more sanitary means of controlling and distributing the liquids in the separator.

\Vith the above and other objects in view, the invention consists essentially of the improved construction particularly described and set forth in the following specification and accompanying drawing forming part of the same.

In the drawings: A

Figure 1 is a half section half elevation of a separator bowl, with the bowl center embodying my invention.

Fig. 2 is a perspective view of the bowl center showing my improvement thereon and the position of the disks relatively to the center.

Fig. 3 is a plan view of the improved bowl center.

Fig. 4: is a vertical section of a guide cone which coacts with the stack of disks.

Fig. 5 is a plan view of the same.

Fig. 6 isa perspective view of one of the disks.

Like characters of reference refer tolike parts in the several figures.

Referring to the drawings, A represents a centrifugal bowl of a centrifugal separator and comprises the bowl center B having its lower end formed like a frustum of a cone 10 and a central conduit 11. On this portion 10 of the center bowl the disks 9 are arranged in stacked formation and a guide cone 12 is superposed on the disks, the said guide cone and disks being inclosed by a casing 13, the inner wall of the cylindrical portion of which is spaced from the outer periphery of the stack of disks 9.

The parts which have been enumerated above are old and well known in the art and my invention particularly relates to a means for controlling the liquid to be separated and distributing the liquid to any particular point of the stack of disks, so that the liquid will have to travel the longest possible path during the period it is subjected to the separating process.

This improvement consists in providing box wings C which are rigidly attached to the outer periphery of the conduit 11 and ad acent to the conical portion 10 of the bowl center, and this box wing is provided with a back wall 15 arranged radially relatively to the conduit 11, and the outer side wall 16 of the box wing is arranged concentrically with the conduit 11 as seen in Figs. 2 and 3.

The upper wall 17 of the box wing is closed, so that this box wing constitutes a pocket which is open on the front relatively to the rotation of the said bowl center.

The radial wall 15 constitutes the back wall of the pocket and is provided with an orifice 18 therein, and an orifice 8 extends through the conduit 11 into each pocket C.

lVhen the liquid to be separated is delivered to the conduit 11 it passes through the orifices 8 in the said conduit into the pockets G, and, as the bowl is rotating at a high rate of speed, the liquid passes through the orifice 18 and is delivered to the lower disks of the stack of disks, the liquid then passing toward the outer periphery of the disks and in this passage the separation of the lighter and heavier liquids takes place.

The liquid then travels upwardly through the space between the inner wall of the cylindrical portion of the casing 13, and the outer periphery of the stack of disks and during such passage of the liquid the lighter liquid passes in through adjacent disks and travels toward the center so effecting a separation of the heavier and lighter liquids.

Considering the use of this separator for the separation of whole milk then as the milk is delivered from the pocket C through the orifice 18 it will enter the perforated wall of superposed disks and at the bottom ofthe stack thereof. The milk will then travel along the greatest path of travel and under the centrifugal force will rise upwardly around the outer periphery of the stack of disks, and the milk will be constantly under a maximum of pressure.

The milk is delivered by the pockets C to a articular point of the stack of disks.

he disks are stacked in the bowl for the sole purposes of channelizing the interior of the bowl and by this method of delivering the whole milk to the bottom disks only, it will be seen that it is possible to retain the liquids to be separated in a bowl of this construction under constant pressure for a greater period of such for instance as by uniformly distrib uting the milk to each disk.

The cream will be completely separated from the milk as the milk arises around the stack of disks and will travel toward the center of the bowl.

It will be observed that it is intended to provide a sanitary means of controllin the travel of the work which enters the owl and subject it to a uniform pressure by governing the length of travel within the bowl, force or pressure and time being the principal separating agents in connection with centrifugal separating machines together with a means of causing liquids to travel a certain distance within a certain period of time and it will'be observed that the above construction will permit a very sanitary means of separating with a maximum of force as compared with old constructions heretofore used.

It should be observed that pockets 0 facilitate positioning the disks in the bowl and eliminate the use of slip collars, tubes,

time than by other means,

small crevices or channels heretofore necessary in centrifugal separating machines.

As many changes could be made in the above construction and many widely different embodiments of my invention within the'scope of the claims, constructed without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense.

What I claim as my invention is:

1.'The combination with a centrifugal separator bowl center having a stack of disks thereon, of a'pocket having a closed upper wall, an open front, and a perforated rear wall, the perforation being so located that it will deliver the liquid to be separated to the lowermost disk -.of the stack, the liquid being then caused to flow outwardly and upwardly around the stack of disks, as and for the purpose specified.

2. The combination with a centrifugal separator bowl center having a stack of disks thereon, of a pocket having a radial perforated rear wall, an imperforate outer concentric wall, an imperforate upper wall, the perforation in the rear wall being designed to deliverlthe liquid to be separated to the lowermost disk of the stack, the liquid being then caused to flow outwardly and then upwardly around the stack of disks, as and for the purpose specified. 1 In witness whereof I have hereunto set my iand.

NELSON. HOWARD NORRIS. 

